+/**
+ * Return expected size of a compressed texture.
+ */
+static GLuint
+compressed_tex_size(GLsizei width, GLsizei height, GLsizei depth,
+ GLenum glformat)
+{
+ gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat);
+ return _mesa_format_image_size(mesaFormat, width, height, depth);
+}
+
+
+/*
+ * Return compressed texture block size, in pixels.
+ */
+static void
+get_compressed_block_size(GLenum glformat, GLuint *bw, GLuint *bh)
+{
+ gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat);
+ _mesa_get_format_block_size(mesaFormat, bw, bh);
+}
+
+
/**
* Special value returned by error some texture error checking functions when
* an error is detected and the proxy texture image's width/height/depth/format
}
+/**
+ * Error checking for glCompressedTexImage[123]D().
+ * \param reason returns reason for error, if any
+ * \return error code or GL_NO_ERROR or PROXY_ERROR.
+ */
static GLenum
compressed_texture_error_check(struct gl_context *ctx, GLint dimensions,
GLenum target, GLint level,
GLenum internalFormat, GLsizei width,
GLsizei height, GLsizei depth, GLint border,
- GLsizei imageSize);
+ GLsizei imageSize)
+{
+ const GLenum proxyTarget = get_proxy_target(target);
+ const GLint maxLevels = _mesa_max_texture_levels(ctx, target);
+ GLint expectedSize;
+ GLenum choose_format;
+ GLenum choose_type;
+ GLenum proxy_format;
+ GLenum error = GL_NO_ERROR;
+ char *reason = ""; /* no error */
+
+ if (!target_can_be_compressed(ctx, target, internalFormat)) {
+ reason = "target";
+ error = GL_INVALID_ENUM;
+ goto error;
+ }
+
+ /* This will detect any invalid internalFormat value */
+ if (!_mesa_is_compressed_format(ctx, internalFormat)) {
+ reason = "internalFormat";
+ error = GL_INVALID_ENUM;
+ goto error;
+ }
+
+ switch (internalFormat) {
+#if FEATURE_ES
+ case GL_PALETTE4_RGB8_OES:
+ case GL_PALETTE4_RGBA8_OES:
+ case GL_PALETTE4_R5_G6_B5_OES:
+ case GL_PALETTE4_RGBA4_OES:
+ case GL_PALETTE4_RGB5_A1_OES:
+ case GL_PALETTE8_RGB8_OES:
+ case GL_PALETTE8_RGBA8_OES:
+ case GL_PALETTE8_R5_G6_B5_OES:
+ case GL_PALETTE8_RGBA4_OES:
+ case GL_PALETTE8_RGB5_A1_OES:
+ _mesa_cpal_compressed_format_type(internalFormat, &choose_format,
+ &choose_type);
+ proxy_format = choose_format;
+
+ /* check level (note that level should be zero or less!) */
+ if (level > 0 || level < -maxLevels) {
+ reason = "level";
+ error = GL_INVALID_VALUE;
+ goto error;
+ }
+
+ if (dimensions != 2) {
+ reason = "compressed paletted textures must be 2D";
+ error = GL_INVALID_OPERATION;
+ goto error;
+ }
+
+ /* Figure out the expected texture size (in bytes). This will be
+ * checked against the actual size later.
+ */
+ expectedSize = _mesa_cpal_compressed_size(level, internalFormat,
+ width, height);
+
+ /* This is for the benefit of the TestProxyTexImage below. It expects
+ * level to be non-negative. OES_compressed_paletted_texture uses a
+ * weird mechanism where the level specified to glCompressedTexImage2D
+ * is -(n-1) number of levels in the texture, and the data specifies the
+ * complete mipmap stack. This is done to ensure the palette is the
+ * same for all levels.
+ */
+ level = -level;
+ break;
+#endif
+
+ default:
+ choose_format = GL_NONE;
+ choose_type = GL_NONE;
+ proxy_format = internalFormat;
+
+ /* check level */
+ if (level < 0 || level >= maxLevels) {
+ reason = "level";
+ error = GL_INVALID_VALUE;
+ goto error;
+ }
+
+ /* Figure out the expected texture size (in bytes). This will be
+ * checked against the actual size later.
+ */
+ expectedSize = compressed_tex_size(width, height, depth, internalFormat);
+ break;
+ }
+
+ /* This should really never fail */
+ if (_mesa_base_tex_format(ctx, internalFormat) < 0) {
+ reason = "internalFormat";
+ error = GL_INVALID_ENUM;
+ goto error;
+ }
+
+ /* No compressed formats support borders at this time */
+ if (border != 0) {
+ reason = "border != 0";
+ error = GL_INVALID_VALUE;
+ goto error;
+ }
+
+ /* For cube map, width must equal height */
+ if (_mesa_is_cube_face(target) && width != height) {
+ reason = "width != height";
+ error = GL_INVALID_VALUE;
+ goto error;
+ }
+
+ /* check image size against compression block size */
+ {
+ gl_format texFormat =
+ ctx->Driver.ChooseTextureFormat(ctx, proxy_format,
+ choose_format, choose_type);
+ GLuint bw, bh;
+
+ _mesa_get_format_block_size(texFormat, &bw, &bh);
+ if ((width > bw && width % bw > 0) ||
+ (height > bh && height % bh > 0)) {
+ /*
+ * Per GL_ARB_texture_compression: GL_INVALID_OPERATION is
+ * generated [...] if any parameter combinations are not
+ * supported by the specific compressed internal format.
+ */
+ reason = "invalid width or height for compression format";
+ error = GL_INVALID_OPERATION;
+ goto error;
+ }
+ }
+
+ /* check image sizes */
+ if (!ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,
+ proxy_format, choose_format,
+ choose_type,
+ width, height, depth, border)) {
+ /* See error comment above */
+ if (target == proxyTarget) {
+ return PROXY_ERROR;
+ }
+ reason = "invalid width, height or format";
+ error = GL_INVALID_OPERATION;
+ goto error;
+ }
+
+ /* check image size in bytes */
+ if (expectedSize != imageSize) {
+ /* Per GL_ARB_texture_compression: GL_INVALID_VALUE is generated [...]
+ * if <imageSize> is not consistent with the format, dimensions, and
+ * contents of the specified image.
+ */
+ reason = "imageSize inconsistant with width/height/format";
+ error = GL_INVALID_VALUE;
+ goto error;
+ }
+
+ if (!mutable_tex_object(ctx, target)) {
+ reason = "immutable texture";
+ error = GL_INVALID_OPERATION;
+ goto error;
+ }
+
+ return GL_NO_ERROR;
+
+error:
+ _mesa_error(ctx, error, "glCompressedTexImage%dD(%s)", dimensions, reason);
+ return error;
+}
+
+
/**
* Test glTexSubImage[123]D() parameters for errors.
/**********************************************************************/
-/**
- * Return expected size of a compressed texture.
- */
-static GLuint
-compressed_tex_size(GLsizei width, GLsizei height, GLsizei depth,
- GLenum glformat)
-{
- gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat);
- return _mesa_format_image_size(mesaFormat, width, height, depth);
-}
-
-
-/*
- * Return compressed texture block size, in pixels.
- */
-static void
-get_compressed_block_size(GLenum glformat, GLuint *bw, GLuint *bh)
-{
- gl_format mesaFormat = _mesa_glenum_to_compressed_format(glformat);
- _mesa_get_format_block_size(mesaFormat, bw, bh);
-}
-
-
-/**
- * Error checking for glCompressedTexImage[123]D().
- * \param reason returns reason for error, if any
- * \return error code or GL_NO_ERROR or PROXY_ERROR.
- */
-static GLenum
-compressed_texture_error_check(struct gl_context *ctx, GLint dimensions,
- GLenum target, GLint level,
- GLenum internalFormat, GLsizei width,
- GLsizei height, GLsizei depth, GLint border,
- GLsizei imageSize)
-{
- const GLenum proxyTarget = get_proxy_target(target);
- const GLint maxLevels = _mesa_max_texture_levels(ctx, target);
- GLint expectedSize;
- GLenum choose_format;
- GLenum choose_type;
- GLenum proxy_format;
- GLenum error = GL_NO_ERROR;
- char *reason = ""; /* no error */
-
- if (!target_can_be_compressed(ctx, target, internalFormat)) {
- reason = "target";
- error = GL_INVALID_ENUM;
- goto error;
- }
-
- /* This will detect any invalid internalFormat value */
- if (!_mesa_is_compressed_format(ctx, internalFormat)) {
- reason = "internalFormat";
- error = GL_INVALID_ENUM;
- goto error;
- }
-
- switch (internalFormat) {
-#if FEATURE_ES
- case GL_PALETTE4_RGB8_OES:
- case GL_PALETTE4_RGBA8_OES:
- case GL_PALETTE4_R5_G6_B5_OES:
- case GL_PALETTE4_RGBA4_OES:
- case GL_PALETTE4_RGB5_A1_OES:
- case GL_PALETTE8_RGB8_OES:
- case GL_PALETTE8_RGBA8_OES:
- case GL_PALETTE8_R5_G6_B5_OES:
- case GL_PALETTE8_RGBA4_OES:
- case GL_PALETTE8_RGB5_A1_OES:
- _mesa_cpal_compressed_format_type(internalFormat, &choose_format,
- &choose_type);
- proxy_format = choose_format;
-
- /* check level (note that level should be zero or less!) */
- if (level > 0 || level < -maxLevels) {
- reason = "level";
- error = GL_INVALID_VALUE;
- goto error;
- }
-
- if (dimensions != 2) {
- reason = "compressed paletted textures must be 2D";
- error = GL_INVALID_OPERATION;
- goto error;
- }
-
- /* Figure out the expected texture size (in bytes). This will be
- * checked against the actual size later.
- */
- expectedSize = _mesa_cpal_compressed_size(level, internalFormat,
- width, height);
-
- /* This is for the benefit of the TestProxyTexImage below. It expects
- * level to be non-negative. OES_compressed_paletted_texture uses a
- * weird mechanism where the level specified to glCompressedTexImage2D
- * is -(n-1) number of levels in the texture, and the data specifies the
- * complete mipmap stack. This is done to ensure the palette is the
- * same for all levels.
- */
- level = -level;
- break;
-#endif
-
- default:
- choose_format = GL_NONE;
- choose_type = GL_NONE;
- proxy_format = internalFormat;
-
- /* check level */
- if (level < 0 || level >= maxLevels) {
- reason = "level";
- error = GL_INVALID_VALUE;
- goto error;
- }
-
- /* Figure out the expected texture size (in bytes). This will be
- * checked against the actual size later.
- */
- expectedSize = compressed_tex_size(width, height, depth, internalFormat);
- break;
- }
-
- /* This should really never fail */
- if (_mesa_base_tex_format(ctx, internalFormat) < 0) {
- reason = "internalFormat";
- error = GL_INVALID_ENUM;
- goto error;
- }
-
- /* No compressed formats support borders at this time */
- if (border != 0) {
- reason = "border != 0";
- error = GL_INVALID_VALUE;
- goto error;
- }
-
- /* For cube map, width must equal height */
- if (_mesa_is_cube_face(target) && width != height) {
- reason = "width != height";
- error = GL_INVALID_VALUE;
- goto error;
- }
-
- /* check image size against compression block size */
- {
- gl_format texFormat =
- ctx->Driver.ChooseTextureFormat(ctx, proxy_format,
- choose_format, choose_type);
- GLuint bw, bh;
-
- _mesa_get_format_block_size(texFormat, &bw, &bh);
- if ((width > bw && width % bw > 0) ||
- (height > bh && height % bh > 0)) {
- /*
- * Per GL_ARB_texture_compression: GL_INVALID_OPERATION is
- * generated [...] if any parameter combinations are not
- * supported by the specific compressed internal format.
- */
- reason = "invalid width or height for compression format";
- error = GL_INVALID_OPERATION;
- goto error;
- }
- }
-
- /* check image sizes */
- if (!ctx->Driver.TestProxyTexImage(ctx, proxyTarget, level,
- proxy_format, choose_format,
- choose_type,
- width, height, depth, border)) {
- /* See error comment above */
- if (target == proxyTarget) {
- return PROXY_ERROR;
- }
- reason = "invalid width, height or format";
- error = GL_INVALID_OPERATION;
- goto error;
- }
-
- /* check image size in bytes */
- if (expectedSize != imageSize) {
- /* Per GL_ARB_texture_compression: GL_INVALID_VALUE is generated [...]
- * if <imageSize> is not consistent with the format, dimensions, and
- * contents of the specified image.
- */
- reason = "imageSize inconsistant with width/height/format";
- error = GL_INVALID_VALUE;
- goto error;
- }
-
- if (!mutable_tex_object(ctx, target)) {
- reason = "immutable texture";
- error = GL_INVALID_OPERATION;
- goto error;
- }
-
- return GL_NO_ERROR;
-
-error:
- _mesa_error(ctx, error, "glCompressedTexImage%dD(%s)", dimensions, reason);
- return error;
-}
-
-
/**
* Error checking for glCompressedTexSubImage[123]D().
* \warning There are some bad assumptions here about the size of compressed
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